Wire rope coupling for elevator

Abstract

An elevator assembly includes an elevator cabin, a counterweight, a compensating cable and a means for suspending the compensating cable from the elevator cabin. The compensating cable includes a proximal end and a distal end. The proximal end is coupled with the elevator cabin and the distal end is coupled with the counterweight. The means for suspending the compensating cable is coupled with the elevator cabin and is further coupled with the compensating cable adjacent the proximal end of the compensating cable. The compensating cable has an elastic deformation limit. The means for suspending the compensating cable has a tensile strength that is less than the elastic deformation limit of the compensating cable.

What is claimed is: 
     
       1. An elevator assembly comprising:
 an elevator cabin; 
 a counterweight; 
 a compensating cable comprising a proximal end and a distal end, the proximal end being coupled with the elevator cabin and the distal end being coupled with the counterweight; 
 a wire rope coupling comprising a cable having a first end and a second end, the first end being coupled with the elevator cabin and the second end being coupled with the compensating cable adjacent the proximal end of the compensating cable, wherein:
 the compensating cable has an elastic deformation limit; and 
 the wire rope coupling has a tensile strength that is less than the elastic deformation limit of the compensating cable. 
 
 
     
     
       2. The elevator assembly of  claim 1  further comprising a grip coupled with the compensating cable adjacent to the proximal end and wherein the second end of the cable is coupled with the compensating cable via the grip. 
     
     
       3. The elevator assembly of  claim 2  wherein the grip comprises a mesh grip. 
     
     
       4. The elevator assembly of  claim 1  wherein the cable has a diameter of between about 3 mm and about 7 mm. 
     
     
       5. The elevator assembly of  claim 4  wherein the diameter is about 4 mm. 
     
     
       6. The elevator assembly of  claim 1  wherein the cable has a tensile strength of between about 2,000 pound force and about 4,000 pound force. 
     
     
       7. The elevator assembly of  claim 6  wherein the tensile strength is between about 2,300 pound force and about 3,500 pound force. 
     
     
       8. The elevator assembly of  claim 7  wherein the tensile strength is between about 2,500 pound force and about 3,200 pound force. 
     
     
       9. The elevator assembly of  claim 8  wherein the cable has a diameter of between about 3 mm and about 7 mm. 
     
     
       10. The elevator assembly of  claim 9  wherein the diameter is about 4 mm. 
     
     
       11. The elevator assembly of  claim 1  wherein the cable is formed of a stranded material. 
     
     
       12. The elevator assembly of  claim 11  wherein the stranded material comprises a metal, a metal alloy, an aramid, a composite, or combinations thereof. 
     
     
       13. The elevator assembly of  claim 12  wherein the metal alloy comprises steel. 
     
     
       14. The elevator assembly of  claim 1  wherein the wire rope coupling further comprises:
 a first thimble disposed at the first end of the cable; 
 a second thimble disposed at the second end of the cable; 
 a first compression sleeve coupled with the first end of the cable adjacent to the first thimble; and 
 a second compression sleeve coupled with the second end of the cable adjacent to the second thimble. 
 
     
     
       15. The elevator assembly of  claim 1  further comprising a switch assembly coupled with the elevator cabin and comprising an alarm body and a pullout switch, wherein:
 the pullout switch is selectively removable from the alarm body; and 
 the pullout switch is coupled with the compensating cable. 
 
     
     
       16. An elevator assembly comprising:
 an elevator cabin; 
 a counterweight; 
 a compensating cable comprising a proximal end and a distal end, the proximal end being coupled with the elevator cabin and the distal end being coupled with the counterweight; 
 a means for suspending the compensating cable from the elevator cabin, the means for suspending the compensating cable coupled with the elevator cabin and further coupled with the compensating cable adjacent the proximal end of the compensating cable, wherein:
 the compensating cable has an elastic deformation limit; and 
 the means for suspending the compensating cable has a tensile strength that is less than the elastic deformation limit of the compensating cable. 
 
 
     
     
       17. The elevator assembly of  claim 16  further comprising a grip coupled with the compensating cable adjacent to the proximal end and wherein the means for suspending the compensating cable is coupled with the compensating cable via the grip. 
     
     
       18. The elevator assembly of  claim 17  wherein the grip comprises a mesh grip. 
     
     
       19. The elevator assembly of  claim 16  wherein the means for suspending the compensating cable has a tensile strength of between about 2,000 pound force and about 4,000 pound force. 
     
     
       20. The elevator assembly of  claim 19  wherein the tensile strength is between about 2,300 pound force and about 3,500 pound force. 
     
     
       21. The elevator assembly of  claim 20  wherein the tensile strength is between about 2,500 pound force and about 3,200 pound force. 
     
     
       22. The elevator assembly of  claim 16  further comprising a switch assembly coupled with the elevator cabin and comprising an alarm body and a pullout switch, wherein:
 the pullout switch is selectively removable from the alarm body; and 
 the pullout switch is coupled with the compensating cable.